bin/mandoc/mdoc_argv.c

   1 /*      $Id: mdoc_argv.c,v 1.109 2016/08/28 16:15:12 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  * Copyright (c) 2012, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 #include "config.h"
  19
  20 #include <sys/types.h>
  21
  22 #include <assert.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26
  27 #include "mandoc_aux.h"
  28 #include "mandoc.h"
  29 #include "roff.h"
  30 #include "mdoc.h"
  31 #include "libmandoc.h"
  32 #include "roff_int.h"
  33 #include "libmdoc.h"
  34
  35 #define MULTI_STEP       5 /* pre-allocate argument values */
  36 #define DELIMSZ          6 /* max possible size of a delimiter */
  37
  38 enum    argsflag {
  39         ARGSFL_NONE = 0,
  40         ARGSFL_DELIM, /* handle delimiters of [[::delim::][ ]+]+ */
  41         ARGSFL_TABSEP /* handle tab/`Ta' separated phrases */
  42 };
  43
  44 enum    argvflag {
  45         ARGV_NONE, /* no args to flag (e.g., -split) */
  46         ARGV_SINGLE, /* one arg to flag (e.g., -file xxx)  */
  47         ARGV_MULTI /* multiple args (e.g., -column xxx yyy) */
  48 };
  49
  50 struct  mdocarg {
  51         enum argsflag    flags;
  52         const enum mdocargt *argvs;
  53 };
  54
  55 static  void             argn_free(struct mdoc_arg *, int);
  56 static  enum margserr    args(struct roff_man *, int, int *,
  57                                 char *, enum argsflag, char **);
  58 static  int              args_checkpunct(const char *, int);
  59 static  void             argv_multi(struct roff_man *, int,
  60                                 struct mdoc_argv *, int *, char *);
  61 static  void             argv_single(struct roff_man *, int,
  62                                 struct mdoc_argv *, int *, char *);
  63
  64 static  const enum argvflag argvflags[MDOC_ARG_MAX] = {
  65         ARGV_NONE,      /* MDOC_Split */
  66         ARGV_NONE,      /* MDOC_Nosplit */
  67         ARGV_NONE,      /* MDOC_Ragged */
  68         ARGV_NONE,      /* MDOC_Unfilled */
  69         ARGV_NONE,      /* MDOC_Literal */
  70         ARGV_SINGLE,    /* MDOC_File */
  71         ARGV_SINGLE,    /* MDOC_Offset */
  72         ARGV_NONE,      /* MDOC_Bullet */
  73         ARGV_NONE,      /* MDOC_Dash */
  74         ARGV_NONE,      /* MDOC_Hyphen */
  75         ARGV_NONE,      /* MDOC_Item */
  76         ARGV_NONE,      /* MDOC_Enum */
  77         ARGV_NONE,      /* MDOC_Tag */
  78         ARGV_NONE,      /* MDOC_Diag */
  79         ARGV_NONE,      /* MDOC_Hang */
  80         ARGV_NONE,      /* MDOC_Ohang */
  81         ARGV_NONE,      /* MDOC_Inset */
  82         ARGV_MULTI,     /* MDOC_Column */
  83         ARGV_SINGLE,    /* MDOC_Width */
  84         ARGV_NONE,      /* MDOC_Compact */
  85         ARGV_NONE,      /* MDOC_Std */
  86         ARGV_NONE,      /* MDOC_Filled */
  87         ARGV_NONE,      /* MDOC_Words */
  88         ARGV_NONE,      /* MDOC_Emphasis */
  89         ARGV_NONE,      /* MDOC_Symbolic */
  90         ARGV_NONE       /* MDOC_Symbolic */
  91 };
  92
  93 static  const enum mdocargt args_Ex[] = {
  94         MDOC_Std,
  95         MDOC_ARG_MAX
  96 };
  97
  98 static  const enum mdocargt args_An[] = {
  99         MDOC_Split,
 100         MDOC_Nosplit,
 101         MDOC_ARG_MAX
 102 };
 103
 104 static  const enum mdocargt args_Bd[] = {
 105         MDOC_Ragged,
 106         MDOC_Unfilled,
 107         MDOC_Filled,
 108         MDOC_Literal,
 109         MDOC_File,
 110         MDOC_Offset,
 111         MDOC_Compact,
 112         MDOC_Centred,
 113         MDOC_ARG_MAX
 114 };
 115
 116 static  const enum mdocargt args_Bf[] = {
 117         MDOC_Emphasis,
 118         MDOC_Literal,
 119         MDOC_Symbolic,
 120         MDOC_ARG_MAX
 121 };
 122
 123 static  const enum mdocargt args_Bk[] = {
 124         MDOC_Words,
 125         MDOC_ARG_MAX
 126 };
 127
 128 static  const enum mdocargt args_Bl[] = {
 129         MDOC_Bullet,
 130         MDOC_Dash,
 131         MDOC_Hyphen,
 132         MDOC_Item,
 133         MDOC_Enum,
 134         MDOC_Tag,
 135         MDOC_Diag,
 136         MDOC_Hang,
 137         MDOC_Ohang,
 138         MDOC_Inset,
 139         MDOC_Column,
 140         MDOC_Width,
 141         MDOC_Offset,
 142         MDOC_Compact,
 143         MDOC_Nested,
 144         MDOC_ARG_MAX
 145 };
 146
 147 static  const struct mdocarg mdocargs[MDOC_MAX] = {
 148         { ARGSFL_DELIM, NULL }, /* Ap */
 149         { ARGSFL_NONE, NULL }, /* Dd */
 150         { ARGSFL_NONE, NULL }, /* Dt */
 151         { ARGSFL_NONE, NULL }, /* Os */
 152         { ARGSFL_NONE, NULL }, /* Sh */
 153         { ARGSFL_NONE, NULL }, /* Ss */
 154         { ARGSFL_NONE, NULL }, /* Pp */
 155         { ARGSFL_DELIM, NULL }, /* D1 */
 156         { ARGSFL_DELIM, NULL }, /* Dl */
 157         { ARGSFL_NONE, args_Bd }, /* Bd */
 158         { ARGSFL_NONE, NULL }, /* Ed */
 159         { ARGSFL_NONE, args_Bl }, /* Bl */
 160         { ARGSFL_NONE, NULL }, /* El */
 161         { ARGSFL_NONE, NULL }, /* It */
 162         { ARGSFL_DELIM, NULL }, /* Ad */
 163         { ARGSFL_DELIM, args_An }, /* An */
 164         { ARGSFL_DELIM, NULL }, /* Ar */
 165         { ARGSFL_DELIM, NULL }, /* Cd */
 166         { ARGSFL_DELIM, NULL }, /* Cm */
 167         { ARGSFL_DELIM, NULL }, /* Dv */
 168         { ARGSFL_DELIM, NULL }, /* Er */
 169         { ARGSFL_DELIM, NULL }, /* Ev */
 170         { ARGSFL_NONE, args_Ex }, /* Ex */
 171         { ARGSFL_DELIM, NULL }, /* Fa */
 172         { ARGSFL_NONE, NULL }, /* Fd */
 173         { ARGSFL_DELIM, NULL }, /* Fl */
 174         { ARGSFL_DELIM, NULL }, /* Fn */
 175         { ARGSFL_DELIM, NULL }, /* Ft */
 176         { ARGSFL_DELIM, NULL }, /* Ic */
 177         { ARGSFL_DELIM, NULL }, /* In */
 178         { ARGSFL_DELIM, NULL }, /* Li */
 179         { ARGSFL_NONE, NULL }, /* Nd */
 180         { ARGSFL_DELIM, NULL }, /* Nm */
 181         { ARGSFL_DELIM, NULL }, /* Op */
 182         { ARGSFL_DELIM, NULL }, /* Ot */
 183         { ARGSFL_DELIM, NULL }, /* Pa */
 184         { ARGSFL_NONE, args_Ex }, /* Rv */
 185         { ARGSFL_DELIM, NULL }, /* St */
 186         { ARGSFL_DELIM, NULL }, /* Va */
 187         { ARGSFL_DELIM, NULL }, /* Vt */
 188         { ARGSFL_DELIM, NULL }, /* Xr */
 189         { ARGSFL_NONE, NULL }, /* %A */
 190         { ARGSFL_NONE, NULL }, /* %B */
 191         { ARGSFL_NONE, NULL }, /* %D */
 192         { ARGSFL_NONE, NULL }, /* %I */
 193         { ARGSFL_NONE, NULL }, /* %J */
 194         { ARGSFL_NONE, NULL }, /* %N */
 195         { ARGSFL_NONE, NULL }, /* %O */
 196         { ARGSFL_NONE, NULL }, /* %P */
 197         { ARGSFL_NONE, NULL }, /* %R */
 198         { ARGSFL_NONE, NULL }, /* %T */
 199         { ARGSFL_NONE, NULL }, /* %V */
 200         { ARGSFL_DELIM, NULL }, /* Ac */
 201         { ARGSFL_NONE, NULL }, /* Ao */
 202         { ARGSFL_DELIM, NULL }, /* Aq */
 203         { ARGSFL_DELIM, NULL }, /* At */
 204         { ARGSFL_DELIM, NULL }, /* Bc */
 205         { ARGSFL_NONE, args_Bf }, /* Bf */
 206         { ARGSFL_NONE, NULL }, /* Bo */
 207         { ARGSFL_DELIM, NULL }, /* Bq */
 208         { ARGSFL_DELIM, NULL }, /* Bsx */
 209         { ARGSFL_DELIM, NULL }, /* Bx */
 210         { ARGSFL_NONE, NULL }, /* Db */
 211         { ARGSFL_DELIM, NULL }, /* Dc */
 212         { ARGSFL_NONE, NULL }, /* Do */
 213         { ARGSFL_DELIM, NULL }, /* Dq */
 214         { ARGSFL_DELIM, NULL }, /* Ec */
 215         { ARGSFL_NONE, NULL }, /* Ef */
 216         { ARGSFL_DELIM, NULL }, /* Em */
 217         { ARGSFL_NONE, NULL }, /* Eo */
 218         { ARGSFL_DELIM, NULL }, /* Fx */
 219         { ARGSFL_DELIM, NULL }, /* Ms */
 220         { ARGSFL_DELIM, NULL }, /* No */
 221         { ARGSFL_DELIM, NULL }, /* Ns */
 222         { ARGSFL_DELIM, NULL }, /* Nx */
 223         { ARGSFL_DELIM, NULL }, /* Ox */
 224         { ARGSFL_DELIM, NULL }, /* Pc */
 225         { ARGSFL_DELIM, NULL }, /* Pf */
 226         { ARGSFL_NONE, NULL }, /* Po */
 227         { ARGSFL_DELIM, NULL }, /* Pq */
 228         { ARGSFL_DELIM, NULL }, /* Qc */
 229         { ARGSFL_DELIM, NULL }, /* Ql */
 230         { ARGSFL_NONE, NULL }, /* Qo */
 231         { ARGSFL_DELIM, NULL }, /* Qq */
 232         { ARGSFL_NONE, NULL }, /* Re */
 233         { ARGSFL_NONE, NULL }, /* Rs */
 234         { ARGSFL_DELIM, NULL }, /* Sc */
 235         { ARGSFL_NONE, NULL }, /* So */
 236         { ARGSFL_DELIM, NULL }, /* Sq */
 237         { ARGSFL_NONE, NULL }, /* Sm */
 238         { ARGSFL_DELIM, NULL }, /* Sx */
 239         { ARGSFL_DELIM, NULL }, /* Sy */
 240         { ARGSFL_DELIM, NULL }, /* Tn */
 241         { ARGSFL_DELIM, NULL }, /* Ux */
 242         { ARGSFL_DELIM, NULL }, /* Xc */
 243         { ARGSFL_NONE, NULL }, /* Xo */
 244         { ARGSFL_NONE, NULL }, /* Fo */
 245         { ARGSFL_DELIM, NULL }, /* Fc */
 246         { ARGSFL_NONE, NULL }, /* Oo */
 247         { ARGSFL_DELIM, NULL }, /* Oc */
 248         { ARGSFL_NONE, args_Bk }, /* Bk */
 249         { ARGSFL_NONE, NULL }, /* Ek */
 250         { ARGSFL_NONE, NULL }, /* Bt */
 251         { ARGSFL_NONE, NULL }, /* Hf */
 252         { ARGSFL_DELIM, NULL }, /* Fr */
 253         { ARGSFL_NONE, NULL }, /* Ud */
 254         { ARGSFL_DELIM, NULL }, /* Lb */
 255         { ARGSFL_NONE, NULL }, /* Lp */
 256         { ARGSFL_DELIM, NULL }, /* Lk */
 257         { ARGSFL_DELIM, NULL }, /* Mt */
 258         { ARGSFL_DELIM, NULL }, /* Brq */
 259         { ARGSFL_NONE, NULL }, /* Bro */
 260         { ARGSFL_DELIM, NULL }, /* Brc */
 261         { ARGSFL_NONE, NULL }, /* %C */
 262         { ARGSFL_NONE, NULL }, /* Es */
 263         { ARGSFL_DELIM, NULL }, /* En */
 264         { ARGSFL_DELIM, NULL }, /* Dx */
 265         { ARGSFL_NONE, NULL }, /* %Q */
 266         { ARGSFL_NONE, NULL }, /* br */
 267         { ARGSFL_NONE, NULL }, /* sp */
 268         { ARGSFL_NONE, NULL }, /* %U */
 269         { ARGSFL_NONE, NULL }, /* Ta */
 270         { ARGSFL_NONE, NULL }, /* ll */
 271 };
 272
 273
 274 /*
 275  * Parse flags and their arguments from the input line.
 276  * These come in the form -flag [argument ...].
 277  * Some flags take no argument, some one, some multiple.
 278  */
 279 void
 280 mdoc_argv(struct roff_man *mdoc, int line, int tok,
 281         struct mdoc_arg **reta, int *pos, char *buf)
 282 {
 283         struct mdoc_argv          tmpv;
 284         struct mdoc_argv        **retv;
 285         const enum mdocargt      *argtable;
 286         char                     *argname;
 287         int                       ipos, retc;
 288         char                      savechar;
 289
 290         *reta = NULL;
 291
 292         /* Which flags does this macro support? */
 293
 294         argtable = mdocargs[tok].argvs;
 295         if (argtable == NULL)
 296                 return;
 297
 298         /* Loop over the flags on the input line. */
 299
 300         ipos = *pos;
 301         while (buf[ipos] == '-') {
 302
 303                 /* Seek to the first unescaped space. */
 304
 305                 for (argname = buf + ++ipos; buf[ipos] != '\0'; ipos++)
 306                         if (buf[ipos] == ' ' && buf[ipos - 1] != '\\')
 307                                 break;
 308
 309                 /*
 310                  * We want to nil-terminate the word to look it up.
 311                  * But we may not have a flag, in which case we need
 312                  * to restore the line as-is.  So keep around the
 313                  * stray byte, which we'll reset upon exiting.
 314                  */
 315
 316                 if ((savechar = buf[ipos]) != '\0')
 317                         buf[ipos++] = '\0';
 318
 319                 /*
 320                  * Now look up the word as a flag.  Use temporary
 321                  * storage that we'll copy into the node's flags.
 322                  */
 323
 324                 while ((tmpv.arg = *argtable++) != MDOC_ARG_MAX)
 325                         if ( ! strcmp(argname, mdoc_argnames[tmpv.arg]))
 326                                 break;
 327
 328                 /* If it isn't a flag, restore the saved byte. */
 329
 330                 if (tmpv.arg == MDOC_ARG_MAX) {
 331                         if (savechar != '\0')
 332                                 buf[ipos - 1] = savechar;
 333                         break;
 334                 }
 335
 336                 /* Read to the next word (the first argument). */
 337
 338                 while (buf[ipos] == ' ')
 339                         ipos++;
 340
 341                 /* Parse the arguments of the flag. */
 342
 343                 tmpv.line  = line;
 344                 tmpv.pos   = *pos;
 345                 tmpv.sz    = 0;
 346                 tmpv.value = NULL;
 347
 348                 switch (argvflags[tmpv.arg]) {
 349                 case ARGV_SINGLE:
 350                         argv_single(mdoc, line, &tmpv, &ipos, buf);
 351                         break;
 352                 case ARGV_MULTI:
 353                         argv_multi(mdoc, line, &tmpv, &ipos, buf);
 354                         break;
 355                 case ARGV_NONE:
 356                         break;
 357                 }
 358
 359                 /* Append to the return values. */
 360
 361                 if (*reta == NULL)
 362                         *reta = mandoc_calloc(1, sizeof(**reta));
 363
 364                 retc = ++(*reta)->argc;
 365                 retv = &(*reta)->argv;
 366                 *retv = mandoc_reallocarray(*retv, retc, sizeof(**retv));
 367                 memcpy(*retv + retc - 1, &tmpv, sizeof(**retv));
 368
 369                 /* Prepare for parsing the next flag. */
 370
 371                 *pos = ipos;
 372                 argtable = mdocargs[tok].argvs;
 373         }
 374 }
 375
 376 void
 377 mdoc_argv_free(struct mdoc_arg *p)
 378 {
 379         int              i;
 380
 381         if (NULL == p)
 382                 return;
 383
 384         if (p->refcnt) {
 385                 --(p->refcnt);
 386                 if (p->refcnt)
 387                         return;
 388         }
 389         assert(p->argc);
 390
 391         for (i = (int)p->argc - 1; i >= 0; i--)
 392                 argn_free(p, i);
 393
 394         free(p->argv);
 395         free(p);
 396 }
 397
 398 static void
 399 argn_free(struct mdoc_arg *p, int iarg)
 400 {
 401         struct mdoc_argv *arg;
 402         int               j;
 403
 404         arg = &p->argv[iarg];
 405
 406         if (arg->sz && arg->value) {
 407                 for (j = (int)arg->sz - 1; j >= 0; j--)
 408                         free(arg->value[j]);
 409                 free(arg->value);
 410         }
 411
 412         for (--p->argc; iarg < (int)p->argc; iarg++)
 413                 p->argv[iarg] = p->argv[iarg+1];
 414 }
 415
 416 enum margserr
 417 mdoc_args(struct roff_man *mdoc, int line, int *pos,
 418         char *buf, int tok, char **v)
 419 {
 420         struct roff_node *n;
 421         char             *v_local;
 422         enum argsflag     fl;
 423
 424         if (v == NULL)
 425                 v = &v_local;
 426         fl = tok == TOKEN_NONE ? ARGSFL_NONE : mdocargs[tok].flags;
 427         if (tok != MDOC_It)
 428                 return args(mdoc, line, pos, buf, fl, v);
 429
 430         /*
 431          * We know that we're in an `It', so it's reasonable to expect
 432          * us to be sitting in a `Bl'.  Someday this may not be the case
 433          * (if we allow random `It's sitting out there), so provide a
 434          * safe fall-back into the default behaviour.
 435          */
 436
 437         for (n = mdoc->last; n; n = n->parent)
 438                 if (MDOC_Bl == n->tok)
 439                         if (LIST_column == n->norm->Bl.type) {
 440                                 fl = ARGSFL_TABSEP;
 441                                 break;
 442                         }
 443
 444         return args(mdoc, line, pos, buf, fl, v);
 445 }
 446
 447 static enum margserr
 448 args(struct roff_man *mdoc, int line, int *pos,
 449                 char *buf, enum argsflag fl, char **v)
 450 {
 451         char            *p;
 452         int              pairs;
 453
 454         if (buf[*pos] == '\0') {
 455                 if (mdoc->flags & MDOC_PHRASELIT &&
 456                     ! (mdoc->flags & MDOC_PHRASE)) {
 457                         mandoc_msg(MANDOCERR_ARG_QUOTE,
 458                             mdoc->parse, line, *pos, NULL);
 459                         mdoc->flags &= ~MDOC_PHRASELIT;
 460                 }
 461                 return ARGS_EOLN;
 462         }
 463
 464         *v = buf + *pos;
 465
 466         if (fl == ARGSFL_DELIM && args_checkpunct(buf, *pos))
 467                 return ARGS_PUNCT;
 468
 469         /*
 470          * Tabs in `It' lines in `Bl -column' can't be escaped.
 471          * Phrases are reparsed for `Ta' and other macros later.
 472          */
 473
 474         if (fl == ARGSFL_TABSEP) {
 475                 if ((p = strchr(*v, '\t')) != NULL) {
 476
 477                         /*
 478                          * Words right before and right after
 479                          * tab characters are not parsed,
 480                          * unless there is a blank in between.
 481                          */
 482
 483                         if (p > buf && p[-1] != ' ')
 484                                 mdoc->flags |= MDOC_PHRASEQL;
 485                         if (p[1] != ' ')
 486                                 mdoc->flags |= MDOC_PHRASEQN;
 487
 488                         /*
 489                          * One or more blanks after a tab cause
 490                          * one leading blank in the next column.
 491                          * So skip all but one of them.
 492                          */
 493
 494                         *pos += (int)(p - *v) + 1;
 495                         while (buf[*pos] == ' ' && buf[*pos + 1] == ' ')
 496                                 (*pos)++;
 497
 498                         /*
 499                          * A tab at the end of an input line
 500                          * switches to the next column.
 501                          */
 502
 503                         if (buf[*pos] == '\0' || buf[*pos + 1] == '\0')
 504                                 mdoc->flags |= MDOC_PHRASEQN;
 505                 } else {
 506                         p = strchr(*v, '\0');
 507                         if (p[-1] == ' ')
 508                                 mandoc_msg(MANDOCERR_SPACE_EOL,
 509                                     mdoc->parse, line, *pos, NULL);
 510                         *pos += (int)(p - *v);
 511                 }
 512
 513                 /* Skip any trailing blank characters. */
 514                 while (p > *v && p[-1] == ' ' &&
 515                     (p - 1 == *v || p[-2] != '\\'))
 516                         p--;
 517                 *p = '\0';
 518
 519                 return ARGS_PHRASE;
 520         }
 521
 522         /*
 523          * Process a quoted literal.  A quote begins with a double-quote
 524          * and ends with a double-quote NOT preceded by a double-quote.
 525          * NUL-terminate the literal in place.
 526          * Collapse pairs of quotes inside quoted literals.
 527          * Whitespace is NOT involved in literal termination.
 528          */
 529
 530         if (mdoc->flags & MDOC_PHRASELIT || buf[*pos] == '\"') {
 531                 if ( ! (mdoc->flags & MDOC_PHRASELIT))
 532                         *v = &buf[++(*pos)];
 533
 534                 if (mdoc->flags & MDOC_PHRASE)
 535                         mdoc->flags |= MDOC_PHRASELIT;
 536
 537                 pairs = 0;
 538                 for ( ; buf[*pos]; (*pos)++) {
 539                         /* Move following text left after quoted quotes. */
 540                         if (pairs)
 541                                 buf[*pos - pairs] = buf[*pos];
 542                         if ('\"' != buf[*pos])
 543                                 continue;
 544                         /* Unquoted quotes end quoted args. */
 545                         if ('\"' != buf[*pos + 1])
 546                                 break;
 547                         /* Quoted quotes collapse. */
 548                         pairs++;
 549                         (*pos)++;
 550                 }
 551                 if (pairs)
 552                         buf[*pos - pairs] = '\0';
 553
 554                 if (buf[*pos] == '\0') {
 555                         if ( ! (mdoc->flags & MDOC_PHRASE))
 556                                 mandoc_msg(MANDOCERR_ARG_QUOTE,
 557                                     mdoc->parse, line, *pos, NULL);
 558                         return ARGS_QWORD;
 559                 }
 560
 561                 mdoc->flags &= ~MDOC_PHRASELIT;
 562                 buf[(*pos)++] = '\0';
 563
 564                 if ('\0' == buf[*pos])
 565                         return ARGS_QWORD;
 566
 567                 while (' ' == buf[*pos])
 568                         (*pos)++;
 569
 570                 if ('\0' == buf[*pos])
 571                         mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
 572                             line, *pos, NULL);
 573
 574                 return ARGS_QWORD;
 575         }
 576
 577         p = &buf[*pos];
 578         *v = mandoc_getarg(mdoc->parse, &p, line, pos);
 579
 580         /*
 581          * After parsing the last word in this phrase,
 582          * tell lookup() whether or not to interpret it.
 583          */
 584
 585         if (*p == '\0' && mdoc->flags & MDOC_PHRASEQL) {
 586                 mdoc->flags &= ~MDOC_PHRASEQL;
 587                 mdoc->flags |= MDOC_PHRASEQF;
 588         }
 589         return ARGS_WORD;
 590 }
 591
 592 /*
 593  * Check if the string consists only of space-separated closing
 594  * delimiters.  This is a bit of a dance: the first must be a close
 595  * delimiter, but it may be followed by middle delimiters.  Arbitrary
 596  * whitespace may separate these tokens.
 597  */
 598 static int
 599 args_checkpunct(const char *buf, int i)
 600 {
 601         int              j;
 602         char             dbuf[DELIMSZ];
 603         enum mdelim      d;
 604
 605         /* First token must be a close-delimiter. */
 606
 607         for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++)
 608                 dbuf[j] = buf[i];
 609
 610         if (DELIMSZ == j)
 611                 return 0;
 612
 613         dbuf[j] = '\0';
 614         if (DELIM_CLOSE != mdoc_isdelim(dbuf))
 615                 return 0;
 616
 617         while (' ' == buf[i])
 618                 i++;
 619
 620         /* Remaining must NOT be open/none. */
 621
 622         while (buf[i]) {
 623                 j = 0;
 624                 while (buf[i] && ' ' != buf[i] && j < DELIMSZ)
 625                         dbuf[j++] = buf[i++];
 626
 627                 if (DELIMSZ == j)
 628                         return 0;
 629
 630                 dbuf[j] = '\0';
 631                 d = mdoc_isdelim(dbuf);
 632                 if (DELIM_NONE == d || DELIM_OPEN == d)
 633                         return 0;
 634
 635                 while (' ' == buf[i])
 636                         i++;
 637         }
 638
 639         return '\0' == buf[i];
 640 }
 641
 642 static void
 643 argv_multi(struct roff_man *mdoc, int line,
 644                 struct mdoc_argv *v, int *pos, char *buf)
 645 {
 646         enum margserr    ac;
 647         char            *p;
 648
 649         for (v->sz = 0; ; v->sz++) {
 650                 if (buf[*pos] == '-')
 651                         break;
 652                 ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
 653                 if (ac == ARGS_EOLN)
 654                         break;
 655
 656                 if (v->sz % MULTI_STEP == 0)
 657                         v->value = mandoc_reallocarray(v->value,
 658                             v->sz + MULTI_STEP, sizeof(char *));
 659
 660                 v->value[(int)v->sz] = mandoc_strdup(p);
 661         }
 662 }
 663
 664 static void
 665 argv_single(struct roff_man *mdoc, int line,
 666                 struct mdoc_argv *v, int *pos, char *buf)
 667 {
 668         enum margserr    ac;
 669         char            *p;
 670
 671         ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
 672         if (ac == ARGS_EOLN)
 673                 return;
 674
 675         v->sz = 1;
 676         v->value = mandoc_malloc(sizeof(char *));
 677         v->value[0] = mandoc_strdup(p);
 678 }